The Southern Ocean’s role in carbon exchange during the last deglaciation
Changes in the upwelling and degassing of carbon from the Southern Ocean form one of the leading hypotheses for the cause of glacial-interglacial changes in atmospheric carbon dioxide. We present a 25,000-year-long Southern Ocean radiocarbon record reconstructed from deep-sea corals, which shows rad...
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/the-southern-oceans-role-in-carbon-exchange-during-the-last-deglaciation(fe1fefbe-fe9f-4ebd-b45d-091ac687284c).html https://doi.org/10.1126/science.1208163 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/fe1fefbe-fe9f-4ebd-b45d-091ac687284c 2024-06-23T07:56:53+00:00 The Southern Ocean’s role in carbon exchange during the last deglaciation Burke, Andrea Robinson, Laura F. 2012 https://research-portal.st-andrews.ac.uk/en/researchoutput/the-southern-oceans-role-in-carbon-exchange-during-the-last-deglaciation(fe1fefbe-fe9f-4ebd-b45d-091ac687284c).html https://doi.org/10.1126/science.1208163 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/the-southern-oceans-role-in-carbon-exchange-during-the-last-deglaciation(fe1fefbe-fe9f-4ebd-b45d-091ac687284c).html info:eu-repo/semantics/restrictedAccess Burke , A & Robinson , L F 2012 , ' The Southern Ocean’s role in carbon exchange during the last deglaciation ' , Science , vol. 335 , no. 6068 , pp. 557-561 . https://doi.org/10.1126/science.1208163 article 2012 ftunstandrewcris https://doi.org/10.1126/science.1208163 2024-06-13T00:38:10Z Changes in the upwelling and degassing of carbon from the Southern Ocean form one of the leading hypotheses for the cause of glacial-interglacial changes in atmospheric carbon dioxide. We present a 25,000-year-long Southern Ocean radiocarbon record reconstructed from deep-sea corals, which shows radiocarbon-depleted waters during the glacial period and through the early deglaciation. This depletion and associated deep stratification disappeared by ~14.6 ka (thousand years ago), consistent with the transfer of carbon from the deep ocean to the surface ocean and atmosphere via a Southern Ocean ventilation event. Given this evidence for carbon exchange in the Southern Ocean, we show that existing deep-ocean radiocarbon records from the glacial period are sufficiently depleted to explain the ~190 per mil drop in atmospheric radiocarbon between ~17 and 14.5 ka. Article in Journal/Newspaper Southern Ocean University of St Andrews: Research Portal Southern Ocean Science 335 6068 557 561 |
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University of St Andrews: Research Portal |
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ftunstandrewcris |
language |
English |
description |
Changes in the upwelling and degassing of carbon from the Southern Ocean form one of the leading hypotheses for the cause of glacial-interglacial changes in atmospheric carbon dioxide. We present a 25,000-year-long Southern Ocean radiocarbon record reconstructed from deep-sea corals, which shows radiocarbon-depleted waters during the glacial period and through the early deglaciation. This depletion and associated deep stratification disappeared by ~14.6 ka (thousand years ago), consistent with the transfer of carbon from the deep ocean to the surface ocean and atmosphere via a Southern Ocean ventilation event. Given this evidence for carbon exchange in the Southern Ocean, we show that existing deep-ocean radiocarbon records from the glacial period are sufficiently depleted to explain the ~190 per mil drop in atmospheric radiocarbon between ~17 and 14.5 ka. |
format |
Article in Journal/Newspaper |
author |
Burke, Andrea Robinson, Laura F. |
spellingShingle |
Burke, Andrea Robinson, Laura F. The Southern Ocean’s role in carbon exchange during the last deglaciation |
author_facet |
Burke, Andrea Robinson, Laura F. |
author_sort |
Burke, Andrea |
title |
The Southern Ocean’s role in carbon exchange during the last deglaciation |
title_short |
The Southern Ocean’s role in carbon exchange during the last deglaciation |
title_full |
The Southern Ocean’s role in carbon exchange during the last deglaciation |
title_fullStr |
The Southern Ocean’s role in carbon exchange during the last deglaciation |
title_full_unstemmed |
The Southern Ocean’s role in carbon exchange during the last deglaciation |
title_sort |
southern ocean’s role in carbon exchange during the last deglaciation |
publishDate |
2012 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-southern-oceans-role-in-carbon-exchange-during-the-last-deglaciation(fe1fefbe-fe9f-4ebd-b45d-091ac687284c).html https://doi.org/10.1126/science.1208163 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Burke , A & Robinson , L F 2012 , ' The Southern Ocean’s role in carbon exchange during the last deglaciation ' , Science , vol. 335 , no. 6068 , pp. 557-561 . https://doi.org/10.1126/science.1208163 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-southern-oceans-role-in-carbon-exchange-during-the-last-deglaciation(fe1fefbe-fe9f-4ebd-b45d-091ac687284c).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1126/science.1208163 |
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Science |
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335 |
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